An American Viticultural Area (AVA) is a designated wine grape-growing region in the United States distinguishable by geographic features, with boundaries defined by the Alcohol and Tobacco Tax and Trade Bureau, United States Department of the Treasury. The 6 major AVAs are shown below. There are also smaller AVAs in the Finger Lakes Region (Seneca Lake and Cayuga Lake) and on Long Island (The Hamptons and North Fork of Long Island).